1. (07.03 MC) Solve -+ 2 2. 5 7 - (4 points) 35 0 24 7
1 answer:
You might be interested in
By formula we know that:
z (x) = (x - m) / [sd / sqrt (n)]
where x is the value we want to know (6.7), m is the mean (5), sd is the standard deviation (7.1) and n is the sample size (29).
Replacing we have:
z (6.7) = (6.7 - 5) / [7.1 / sqrt (29)]
z = 1.289
If we look in the normal distribution table (attached), we have that the probability is 0.8997, therefore:
1 - 0.8897 = 0.1003
So the conditional probability of a herd sample earning at least 6.7 pounds per steer is 10.03%.
Now the hypothesis tells me:
m> 5
The probability is somewhat low, therefore, the most correct thing is to reject the hypothesis even though it is a fact that can occur.
All the given equations have 2 real solutions except for equation 4 which has only one real root.
<h3>What is a quadratic equation?</h3>A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.
The given quadratic equation
where, a = 12, b = -9 and c = 4
x =
x =
x = 1.063 or -0.313
Second Equation
where, a = 1, b = 10, c = -2
substitute the values into the equation
x =
x = 0.195 or -10.195
Third Equation
where, a = 5, b = -1, c = - 5
x =
x = 0.905 or -0.55
Fourth Equation
where, a = 1, b = -8, c = 16
x =
x =
x = 4
Learn more about quadratic equations;